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1.20ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1555088566

Certificate GIA 1555088566

Diamond specifications and retailer prices

From $1,975 USD
As of November 2, 2026
Save $2,899 USD (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,874 USD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555088566. Listed at 6 retailers as of November 2, 2026, with prices from $1,975 to $4,874, a $2,899 spread on the same certified stone. NZ Jewellers lists it at $4,874. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
M
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555088566
Dimensions6.72 × 6.79 × 4.22 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Cloud, Needle, Indented Natural
Top View
6.72 mm6.79 mm1.20 ctM / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555088566
Side View
Table 57.0%Crown 36°GirdlePavilion 40.8°CuletDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $4,874 USD|Low: $1,975 USD|High: $4,874 USD|Avg: $2,647 USD|+13.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3$1,975 USD
Retailer 6$1,998 USD
Retailer 7$2,017 USD
Retailer 5$2,035 USD
Retailer 4$2,091 USD
Retailer 2$2,237 USD
Retailer 9$2,899 USD
Retailer 8$3,541 USD
NZ Jewellers$4,874 USD

31 data points across 9 retailers

6 retailers$1,975 USD to $4,874 USD

B+
Cheapest Retailer
-
$1,975 USD
B+
Retailer 2
-
$1,998 USD
View
B
Retailer 3
-
$2,035 USD
View
B
Retailer 4
-
$2,091 USD
View
B
Retailer 5
-
$2,237 USD
View
Most Expensive
C
NZ Jewellers
098a6ff9-c6fb-4ece-b88b-436af5113d95 · Nov 2
$4,874 USD
View
5 more retailers have this diamond
Prices start from $1,975 USDSave up to $2,899 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.20ct Round
$1,975 USD